A source tells us Gavin is ‘doing okay’ after being attacked by a group of unidentified men in NYC on Aug. 8 — but adds it’s ‘not strange’ for Gavin to party that late all alone!

Gavin DeGraw‘s physical assault comes as a shock to his close friends and family. HollywoodLife.com spoke to a friend of the singer, who tells us the singer’s 4AM attack near the club National Underground that he co-owns with his brother makes “no sense” and is “very scary.” Gavin, 34, a native New Yorker was spotted bloody and disoriented on 19th and 1st avenue after walking 13 blocks from the scene of the attack.

“Whenever Gavin is in town he’s always downtown partying and he’s always at National Underground,” the source tells us. “Gavin parties late-night and it’s not strange that he seen out at 4am. This is scary because I’ve been out with him at 4am and to think this could have happened while I was there … it’s scary.”

Gavin’s rep released a statement: “Gavin is currently recovering and in stable condition at Bellevue Hospital where he was taken … by ambulance after he was attacked by a group of assailants. He suffers from a concussion, broken nose, black eyes, cuts and bruises. The police are conducting an investigation of the attack.”

Gavin, who was reportedly disoriented by the time the ambulance arrived, told police there were at least three men and he didn’t know any of his assailants.

The “I Don’t Want To Be” singer was expected to perform with Train and Maroon 5 on Aug. 12 in upstate New York.